/// <summary>
/// Decrypt a string.
/// </summary>
/// <param name="encryptedText">String to be decrypted</param>
/// <param name="password">Password used during encryption</param>
/// <exception cref="FormatException"></exception>
public static string Decrypt(string encryptedText, string password)
{
if (encryptedText == null)
{
return(null);
}
if (password == null)
{
password = String.Empty;
}
// Get the bytes of the string
try
{
var bytesToBeDecrypted = Convert.FromBase64String(encryptedText);
var passwordBytes = Encoding.UTF8.GetBytes(password);
passwordBytes = SHA256.Create().ComputeHash(passwordBytes);
var bytesDecrypted = SHA256Crypt.Decrypt(bytesToBeDecrypted, passwordBytes);
return(Encoding.UTF8.GetString(bytesDecrypted));
}
catch (Exception)
{
return(null);
}
}
public static string Encrypt(string plainText, string password)
{
if (plainText == null)
{
return(null);
}
if (password == null)
{
password = String.Empty;
}
// Get the bytes of the string
var bytesToBeEncrypted = Encoding.UTF8.GetBytes(plainText);
var passwordBytes = Encoding.UTF8.GetBytes(password);
// Hash the password with SHA256
passwordBytes = SHA256.Create().ComputeHash(passwordBytes);
var bytesEncrypted = SHA256Crypt.Encrypt(bytesToBeEncrypted, passwordBytes);
return(Convert.ToBase64String(bytesEncrypted));
}